Yes, there seems to be a problem with the default SVD solver (SVDCROSS). I will fix it in the master branch in the next days. Meanwhile, you can run the example with -svd_type trlanczos
Thanks for reporting this. Jose > El 7/8/2015, a las 16:31, Leoni, Massimiliano > <massimiliano.le...@rolls-royce.com> escribió: > > Hi everybody! > > I kept experimenting with slepc and GPUs, and when I turned to SVD I found > out that the hands-on exercise on SVD [#4] doesn’t run properly. > > If I run it on CPU it works fine, whereas… > $ mpirun -np 1 slepcSVD -file > $SLEPC_DIR/share/slepc/datafiles/matrices/rdb200.petsc -bv_type vecs > -mat_type aijcusp -on_error_abort > > Singular value problem stored in file. > > Reading REAL matrix from a binary file... > [0]PETSC ERROR: BVScaleColumn() line 380 in > /gpfs/rrcfd/rruk-students/apps/slepc/src/sys/classes/bv/interface/bvops.c > Scalar value must be same on all processes, argument # 3 > [0]PETSC ERROR: > ------------------------------------------------------------------------ > [0]PETSC ERROR: Caught signal number 11 SEGV: Segmentation Violation, > probably memory access out of range > [0]PETSC ERROR: Try option -start_in_debugger or -on_error_attach_debugger > [0]PETSC ERROR: or see > http://www.mcs.anl.gov/petsc/documentation/faq.html#valgrind > [0]PETSC ERROR: or try http://valgrind.org on GNU/linux and Apple Mac OS X to > find memory corruption errors > [0]PETSC ERROR: likely location of problem given in stack below > [0]PETSC ERROR: --------------------- Stack Frames > ------------------------------------ > [0]PETSC ERROR: Note: The EXACT line numbers in the stack are not available, > [0]PETSC ERROR: INSTEAD the line number of the start of the function > [0]PETSC ERROR: is given. > [0]PETSC ERROR: [0] PetscAbortErrorHandler line 56 > /gpfs/rrcfd/rruk-students/apps/petsc/src/sys/error/errabort.c > [0]PETSC ERROR: [0] PetscError line 363 > /gpfs/rrcfd/rruk-students/apps/petsc/src/sys/error/err.c > [0]PETSC ERROR: [0] BVScaleColumn line 377 > /gpfs/rrcfd/rruk-students/apps/slepc/src/sys/classes/bv/interface/bvops.c > [0]PETSC ERROR: [0] EPSFullLanczos line 357 > /gpfs/rrcfd/rruk-students/apps/slepc/src/eps/impls/krylov/epskrylov.c > [0]PETSC ERROR: [0] EPSSolve_KrylovSchur_Symm line 41 > /gpfs/rrcfd/rruk-students/apps/slepc/src/eps/impls/krylov/krylovschur/ks-symm.c > [0]PETSC ERROR: [0] EPSSolve line 83 > /gpfs/rrcfd/rruk-students/apps/slepc/src/eps/interface/epssolve.c > [0]PETSC ERROR: [0] SVDSolve_Cross line 155 > /gpfs/rrcfd/rruk-students/apps/slepc/src/svd/impls/cross/cross.c > [0]PETSC ERROR: [0] SVDSolve line 92 > /gpfs/rrcfd/rruk-students/apps/slepc/src/svd/interface/svdsolve.c > [0]PETSC ERROR: User provided function() line 0 in unknown file (null) > -------------------------------------------------------------------------- > mpirun noticed that process rank 0 with PID 11264 on node gpu3 exited on > signal 11 (Segmentation fault). > -------------------------------------------------------------------------- > > I am using the same command line options that work just fine on hands-on > exercises 1 and 2, which feature EPS solvers. > > Any hint appreciated. > > Best regards, > Massimiliano Leoni > > > The data contained in, or attached to, this e-mail, may contain confidential > information. If you have received it in error you should notify the sender > immediately by reply e-mail, delete the message from your system and contact > +44 (0) 1332 622800(Security Operations Centre) if you need assistance. > Please do not copy it for any purpose, or disclose its contents to any other > person. > > An e-mail response to this address may be subject to interception or > monitoring for operational reasons or for lawful business practices. > > (c) 2015 Rolls-Royce plc > > Registered office: 62 Buckingham Gate, London SW1E 6AT Company number: > 1003142. Registered in England. >
